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8505A
Instruction manual
Fluke 8505A Instruction Manual
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Instruction manual
(70 pages)
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Operator Safety Information
Table of Contents
List of Tables
List of Illustrations
8505A Digital Multimeter View
Introduction & Specifications
Modular Construction
Description
Options
Accessories
General Specifications
DC Voltage
Input Characteristics
Accuracy
Operating Characteristics
DC Ratio
External Trigger Input
Scan Advance Output
Dimension Drawing
Operating Instructions
Shipping Information
Installation
Operating Notes
Controls, Indicators, and Connectors
Required Hardware
Power-Up Configuration
Display
Measurement Reading
Default Configurations
Overrange Indication
Warning Indication
Interactive Programming Information
Measurement Ranges
Error Codes
Momentary Error Conditions
Latching Error Conditions
Front Panel Push Buttons
Programming Hierarchy
Measurement Parameters
Mathematic Operations
Special Operations
Measurement Terminals and Controls
Volts Input/Ohms Sense (HI and LO) Terminals
Guarding Connections
Amps Input/Ohms Source (HI and LO) Terminals
Ohms Selector
Function
Sampling
Triggering
Measurement Connections
Range
V DC and Ohms Zero
Resolution
Scaling
External Reference
Offset
Peak
Limits
Remote Control
Calibration Mode
Scan Advance
Systems Use
Operation
Measurement Instructions
Applications
Storing a Displayed Value
Storing a Numeric Entry
Recalling
Remote Programming Commands
Programming Instructions
Initialization
Program Sequence
Immediate Characters
Reset
Halt
Go to Local-Lock out Remote
High Speed Reading Mode
Voltage and Current Reading in "I"
Ohms Readings in "I"
8/16 Bit Toggle
Termination Characters
Clear and Execute the Command String
Execute the Command String and Trigger
Execute, Trigger, and Interrupt When Ready
Command Characters
Function Command Characters
Range Command Characters
Modifier Command Characters
Samples Per Reading Command Characters
Filter Command Characters
Trigger Command Characters
Offset Command Characters
External Reference and Scaling Command Characters
External Reference On, Scaling off
External Reference Off, Scaling off & on
Limits and Peaks Command Characters
Limits Testing on
Save Highest and Lowest Values (Peaks On)
Control Command Characters
Output Format
The Binary Output Format
ASCII Data Output Format
Display Control
Local Lockout Control
Echo Command Characters (Used with Bit Serial Option-06 Only)
Line Feed Control Command Characters
Calibration Constant
External Trigger Delay Command Characters (-08A with 8502A Only)
Memory Command Characters
Store
Recall
Range Codes
Sample Codes
Function Codes
Programming Instructions (8505A, 8506A)
High Speed Mode
Averaging Command Characters
Binary Output Format
ASCII Output Format
Recall DC Zero (G0)
Recall Status (G1)
Additional Recall Commands
Theory of Operation
Block Diagram Description
Bus Structure
8505A Block Diagram
Analog Signal Flow
Controller
Background Software Process
Front Panel
Foreground Software Process
Controller Block Diagram
Active Filter
DC Signal Conditioner Block Diagram
Active Filter Block Diagram
Fast R2 A/D Converter
Front/Rear Switch Assembly
R2 A/D Converter Block Diagram
Circuit Analysis
Address and Data Buses
Mnemonics
Timing Circuits
Status Latch
Wait Logic
Interrupts
ACK Logic
Interrupt Generation Logic
DC Signal Conditioner
Filter/External Reference
Analog
Digital
Fast R2 A/D Converter (Analog)
Static Awareness
Maintenance
Service Information
Line Voltage Selection
Test Equipment
As Required by Installed Options
Power Supply Settings
Fuse Replacement
Module Installation and Removal
Module Disassembly and Reassembly
Calibration Memory Replacement
Front Panel PCB Removal
Power Supply Removal
Power Supply Interconnect PCB Removal
Removal and Replacement
Motherboard PCB Removal
Cleaning Instructions
Performance Test
Low Range DC Voltage Tests
Connections for Low Range DC Voltage Tests
High Range DC Voltage Tests
Connections for High Range DC Voltage Tests
Autoranging
Autoranging Test
DC External Reference Test
Calibration Adjustments
Power Supply
Initial Procedure
Checks and Adjustments
Power Supply Verifications
DC Signal Conditioner Adjustments
A/D Converter Calibration Procedures
DC Calibration Procedure
A/D Zero Adjustment
Control Setting
A/D Ladder Adjustments
Linearity Verification
Linearity Checks
Range Adjustments
Troubleshooting
Power Supply Troubleshooting
Guarded Supply
Unguarded Supply
Faulty Module Isolation
Controller Troubleshooting
Front Panel Troubleshooting
DC Signal Conditioner Troubleshooting
Address and Data Field
Active Filter Troubleshooting
Adjustment of R14
Selection of R15 or R16
R2 A/D Converter Troubleshooting
Digital Board
Analog Board
Troubleshooting Notes
Non-Recurring Adjustments
List of Replaceable Parts
How to Obtain Parts
Manual Status Information
Technical Service Centers
8505A Final Assembly
Front Panel Display PCB Assembly
Motherboard PCB Assembly
Isolator PCB Assembly
Power Supply PCB Assembly
Power Supply Interconnect PCB Assembly
Controller PCB Assembly
Front/Rear Switch PCB Assembly
DC Signal Conditioner PCB Assembly
Active Filter PCB Assembly
Fast R2 A/D Converter Assembly
Fast R2 A/D Analog PCB Assembly
A/D Analog PCB Assembly
Fast R2 A/D Digital Assembly
Fast R2 A/D Digital PCB Assembly
Federal Supply Codes for Manufacturers
Service Centers
Option & Accessory Information
Rack Ear Mounting Assembly
High Voltage Probe (80K-6, 80K-40, 83RF, 85RF)
Rack Ear Mounting Installation
AC/DC Converter (Averaging)
AC/DC Converter (Averaging) Specifications
Calibration Chart
Parts List
AC Converter Isolation
Symptom Analysis
AC/DC (Avg) PCB Assembly
AC/DC Converter (Averaging) PCB Assembly
Ohms Converter
Guarding
Ohms Converter Specifications
Temperature Coefficient
Maximum Lead Resistance
Open Circuit Voltage
Ohms Measurement Connections and Guarding
Calibration
Ohms Converter Simplified Schematic
Calibration Tests
Timing
Failure Isolation
Voltage Measurements
Range Switch Closures
Address and Data Coding
Ohms Converter PCB Assembly
Current Shunts
Current Shunts Specifications
Current Shunt Configurations and Range Information
Current Shunts Isolation
Current Shunts Assembly
IEEE-488 Interface
IEEE-488 Standard Cables
Rear Panel Access
Allowable Listen and Talk Addresses
Operating Features
Interface Control
Status Request Responses
Data Lines
Interface Messages
Resets
Control Register
Status Register
Message Decoder
Mode Register
Instrument Interrupts
IEEE 488-1975 Interface PCB Assembly
IEEE 488-1975 Piggy Back PCB Assembly
IEEE 488-1975 Interface Schematic
Piggy Back Schematic
Bit Serial Interface
Mode Selection
Baud Rate Selection
Jumper Arrangements
Interrupt
Bit Serial Interface Troubleshooting
Bit Serial Asynchronous Interface PCB Assembly
Parallel Interface
Personality Card Pin Definition
Personality Card Location
Operating Directions
Block Diagram Analysis
Addresses
Data Inputs
Data Outputs
Detailed Input Processes Description
Parallel Interface Connections
Detailed Output Processes Description
Interface Input Control Signal Timing Diagram
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Quick Links
1
Introduction & Specifications
2
General Specifications
3
Calibration Mode
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Table of Contents
Troubleshooting
Troubleshooting
113
Power Supply Troubleshooting
114
Controller Troubleshooting
120
DC Signal Conditioner Troubleshooting
121
Active Filter Troubleshooting
122
R2 A/D Converter Troubleshooting
123
Troubleshooting Notes
124
Bit Serial Interface Troubleshooting
225
Isolator Troubleshooting
252
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